My favorite statistic is that there are more MRI machines in Massachusetts than there are in all of Canada.
Another example, though with a less comical indicator than the MRI thing: at least up until recently, hernia repairs in Europe were all inpatient procedures. The US innovated on laparoscopic hernia repair that's done outpatient. This is by itself a very good thing! But the knock-on result is that the US now delivers way more hernia repairs; we do medically unnecessary hernia repair because we made it so easy to do.
None of these are my insights; they're just things you learn about if you read and listen to podcasts about the problems with our health care economics.